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Abstract: The temperature characteristics of the developed friction
material showed in the parking brake test by friction & wear tester for
railway rolling stocks are studied, and the analyses are given from the
point of view of energy conversion, heat transmission and change of
material nature. The results showed that all of the temperature
characteristic curves under different initial braking speed can be
divided into three stages, that is irresponsive stage, rapid temperature
rise stage and slow temperature change stage, and the curve of 180
km×h–1 showed abnormal change. The reason of abnormity of the third
stage is that the rate of energy conversion during parking brake slowed
down and at the same time the effect of heat dissipation enhanced
relatively when the braking close to finished. The abnormity of the
temperature characteristic curve at 180 km×h–1 is attributed to the
formation of friction film on the surface of brake pads.
Key words: Brake Temperature Friction
CLC No: U260
TB332 TH117
山东省重点基金资助项目(Z99F03).
Received 20020403, received in revised form 20020802
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